Résumé

Coronavirus and Rotavirus have been reported as the two main pathogens implicated in neonatal gastroenteritis in
calves. The aim of this study is to provide descriptive and analytical epidemiological data and to evaluate the influence
of infection with these two viruses on the onset of diarrhea in calves less than 60 days old. In our study, we included
35 dairy cattle farms in the north-central part of Algeria from January 2019 to December 2021. We analyzed 152 samples
using the Copro-ELISA test, which revealed a prevalence of 10.53% and 9.87% for Rotavirus and Coronavirus,
respectively. The analysis of the results shows that infection is strongly linked to the animal\'s age, with the peak of
virus excretion occurring at around two weeks of age. Thus, 53% of positive cases of Bcov were recorded in calves less
than a week old, and the highest prevalence of rotavirus (17.02%) was in young cattle aged between 8 and 15 days.
Infection by one of these viruses was significantly dependent on the calving season (p < 0.05), as the prevalence was
high in winter calving. In this study, we found that the infection by another enteropathogen, such as Cryptosporidium
and E.coli F5, significantly increased the infection by the viral agents. However, the combination of the two viruses was
also encountered in 12% of cases. Our study also showed that both viruses caused acute diarrhea in calves (RR = 5), as
Rotavirus was only detected in diarrhoeic calves, where it caused severe dehydration ranging from 6 to 8% in 50% of
cases.

Information

Item Type:	Journal
Divisions:	» Production animales, biotechnologie et sante
ePrint ID:	5267
Date Deposited:	2024-12-26
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/fr/publication/article/5267

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